Cascading Failures of Power System with the Consideration of Cyber Attacks

Abstract

Under the variety of information and communication technologies, the control center can securely and reliably operate power grid during the system disturbances and natural events. Specifically, when the initial failures are detected by cyber monitoring, the system will timely take emergency protecting operations to restrain the spreading of failures. Although cyber network makes the system more robust, they also increase the risk from the cyber network. In this paper, we firstly consider a control strategy into the cascading failures model. Then, we study how the cyber attack — False negatives attack confuses the control center, and makes the control center can not take emergency operation timely, causing the failure continue spreading. We propose an optimization problem to model the above assumptions and, by solving the optimization problem, study the impact of different attack scenarios on power system.